Improvement in hydraulic car-brakes



3 Sheets--Sheeti.

1. r; TAYLOR. Hydraulic Oar -Brakes.

PatentedNov.11 4873.

@Wimesses:

@QAQM/ 3Sheets--Sheet2. J F. TAYLOR.

Hydraulic Gar-Brakes,

Paten1ted Nov.H,1873.

U ITED STATES PATENT OFFICE JOHN F- TAYLOR, OF CHARLESTON, SOUTH CAROLINA.

IMPROVEMENT IN HYDRAULIC CAR-BRAKES.

Specification forming part of Letters Patent No. 144,578, dated'November 11, 1873 application filed June 17, 1873.

To all whom it may concern:

Be it known that I, JOHN F. TAYLOR, of Charleston, Charleston county, in the State of South Carolina, have invented a new and Improved Hydraulic Brake; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing forming a part of this specification.

The invention will first be fully described, and then pointed out in the claims.

In Sheet 1, Figure 1 is a plan; Fig. 2, a side elevation, partly in section; Fig. 3, a front elevation. Figs. 4, 5, and 7 are sections, and Fig. 6 a rear elevation, of the various parts connected with my invention.

In Sheets 2 and 3, Fig. 1 is a sectional; Figs. 2 and 4, front elevations, and Fig. 3 a plan view.

In Sheet 1 of drawing, A A are steam, and B B water, cylinders, through each pair A B and A B of which reciprocates a long piston or ram, R, while the ends of cylinders B B are connected by two conjoined tubes, D D. O is a check-valve in tube D, provided with a rod, 0, that is moved from below by the crossbar G arms G, and lever F. In the steamchest K is a slide-valve, J, which is connected with the lever F by a rod, F through which passes alever, H, pivoted at h. By moving this lever to the right, both steam and water or steam and check valves are simultaneously opened.

In Fig. 4, L may represent a suitable steaminlet, and M an exhaust-pipe. The tube D is connected by hose with pipe F of cylinder A (shown in Sheets 2 and 3 of drawing,) Whereinto and in space a, on one side of piston B', the water is forced, while in the space a, on the opposite side, is air. G is a bracket,from which the cylinder A is suspended by links H H. G is a rod, that connects pistonB through crosshead D and rods E E, with the brake-shoe frame B B while the cylinder A is itself rigidly attached to the brake-shoe frame B B these frames being suspended from the truck-frame T in the usual manner.

The operation is as follows: The lever H being moved to the right and the valve 0 J opened, the water in chamber B is forced through the pipe D, the intermediate hose, and pipe F so as to fill the side a of cylinder A, and then the steam is admitted to cylinder A This forces water through pipe D, and exerts the desired hydraulic pressure to cause the brake-bars to bring their shoes against the wheels. The reversal of lever H relieves the brakes.

As, however, there may be occasions when the pipe or connecting-hose may be broken or disconnected, I provide for this contingency as follows: On the sidea, of piston air is forced, by a suitable apparatus, through a valve, A and chambers A A while a surplusage thereof may find its exit through an opening covered by spring-valve W.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of the steam-cylinder A, having the usuahsteam-chest, piston, and parts, and the water-cylinder B, having the outlet-tube, with the same ram R, so that the introduction of steam in one cylinder results in the expulsion of water .from the other.

2. The combination of the cylinder A B and A B provided with rams R R, and connected by tubes D D, as and for the purpose set forth.

tubes D D, with the hydraulic engine AB,

to operate the brake mechanism of a caror train of cars, arranged as shown, and for the purpose described.

5. The combination, Withcylinders A A of engine A B and the air-chambers A A having valve A to enable an air-forcing apparatus to operate the brake at the times and in the manner described.

JOHN F. TAYLOR.

Witnesses:

SoLoN O. KEMON, T. D. DURBIN OURAND. 

